TS4990IDT STMicroelectronics, TS4990IDT Datasheet - Page 23

• Manufacturer Part Number: TS4990IDT
• Description: IC AMP AUDIO PWR 1.2W MONO 8SOIC
• Manufacturer: STMicroelectronics
• Type: Class ABr

Specifications of TS4990IDT

• Output Type: 1-Channel (Mono)
• Max Output Power X Channels @ Load: 1.2W x 1 @ 8 Ohm
• Voltage - Supply: 2.2 V ~ 5.5 V
• Features: Depop, Differential Inputs, Standby, Thermal Protection
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Product: Class-AB
• Output Power: 1.2 W
• Thd Plus Noise: 0.2 %
• Operating Supply Voltage: 3 V, 5 V
• Supply Current: 3.7 mA
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Audio Load Resistance: 8 Ohms
• Input Signal Type: Differential
• Minimum Operating Temperature: - 40 C
• Output Signal Type: Differential
• Supply Type: Single
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 2.2 V
• For Use With: 497-6383 - BOARD DEMO FOR TS4990
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-8117-2; TS4990IDT

TS4990
Note:
Figure 64. Differential input amplifier configuration
The input capacitor C
frequency required. (F
This formula is true only if:
is 5 times lower than F
Example bill of materials
The bill of materials in
and a -3 dB lower cut-off frequency of about 80 Hz.
Table 7.
Neg. Input
Pos. Input
Pin name
C
b
F
C
U1
R
R
=C
Bill of materials for differential input amplifier application
CB
in
Standby
Control
1
2
Cin
Cin
s
=
----------------------------------------
2π R
R1
R1
(
in
L
L
Table 7
R2
Cb
1
can be calculated by the following formula using the -3 dB lower
.
is the lower frequency required).
+
1
R
2
)C
is for the example of a differential amplifier with a gain of 2
B
Vin-
Vin+
Bypass
Standby
R2
C
(Hz)
in
≈
-
+
-------------------- -
2πR
Bias
1
1
F
L
Functional description
Vcc
(F)
20k / 1%
20k / 1%
TS4990
100nF
1µF
-
+
AV = -1
Application information
TS4990
Vout 1
Vout 2
Speaker
8 Ohms
23/32
Cs